PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/02-15:12:00 G02 43.6 45.8 5.6 +/- 0.54 7.5 +/- 0.54 0.030 / 0.030 G05 113.9 70.1 6.0 +/- 0.46 6.4 +/- 0.46 0.030 / 0.040 G12 187.0 52.3 6.8 +/- 1.99 8.4 +/- 1.99 0.040 / 0.040 G25 273.9 58.0 7.5 +/- 0.89 8.6 +/- 0.89 0.040 / 0.050 G29 315.8 37.4 6.2 +/- 0.70 9.4 +/- 0.70 0.040 / 0.060